Hi guys , I know there is lot many software aviliable free in internet to download. But i am seraching a software which can be used to track monthly bills of customer. suppose i have 10 customer and they take some parts from me daily. Each day part has different price, And every customer has started taking from different date. supose 1st customer started taking parts from 2nd day of month like , 2nd customer took parts from 3rd to 25th. Can anyone suggest me any free software for that ?